Bobbin-stripper.



E. H. RYON. BOBBIN STRIPPER. APPLICATION FILED MAY 28. 1914.

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E. H. RYON.

BOBBiN STRIPPER. APPLICATION FILED MAY 28. 1914.

Patented M1220, 1915.

6 SHEETSr-SHEET 2 LO (S) CD PHOTO-I ITHOH WASHINGTON, D. C

E. H. RYON. BOBBIN STRIPPER. APPLICATION FILED MAY 28. 914.

Patented M1220, 1915.

THE NORRIS PETERS Ca, PHDTQLITHQ, WASHINGTON. D. c

Patented M1226, 1915.

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THE NORRIS PETERS CO.. PHOm-LITHQ. WASHING1ON, D. c.

E. H. RYON. BOBBIN STRIPPER. APPLICATION FILED MAY 28. 1914.

Patented. M1220, 1915.

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Z'Swucmkow {93% Meme/157a THE NORkIS PETERS CO.. PHOTU-LI'IHO.v WASHINGTON. D, C

BOBBIN-STRIPPER.

Application filed May 28, 1914.

To (ZZZ whom it may concern:

Be it known that I, EPPA H. RYoN, a citizen of the United States, residing at Waltham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Bobbin-Stripper, of which the following is a specification.

This invention relates to a bobbin stripper designed to remove waste yarn from bobbins which have been ejected from an automobile filling replenishing loom of the socalled feeler type. These bobbins are ejected from the loom when the filling upon the bobbin is reduced to a predetermined point and a small amount of Waste yarn is thus left upon the straight cylindrical portion of the bobbin near its butt.

It is the object of my present invention to provide an improved machine for removing the yarn thus left upon the bobbins by the use of which the operation may be performed with increased speed and efiiciency.

lVith this object in view, a feature of my present invention contemplates the provision of a hopper from which the bobbins are fed together with suitable means for feeding the bobbins to a pair of cooperating rotating gripping devices.

Another feature of the invention contemplates the provision of an element moving in a continuous path parallel to the aXis of the bobbins and provided with lugs or pro jections for forcing the bobbin longitudinally through the gripping devices.

Provision is made for detecting and separating from the stripped bobbins any bobbin having yarn remaining thereon, and I have also provided means by which the gripping devices may exert a yielding pressure upon the bobbin as the bobbins are being fed into position, but are positively locked against separation during the stripping operation.

For the accomplishment of the above and other useful objects, my. invention relates to certain devices, arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings in which- Figure 1 is a side elevation of the complete machine; Fig. 2 is a partial elevation of the side opposite to that shown in Fig. 1; Fig. 3

Specification of Letters Patent.

Patented Apr. 2t), 1915.. Serial No. 841,638.

is a top plan view with the hopper and feeding mechanism omitted; Fig. 4 is an end elevation looking in the direction of the arrow 4: in Fig. l, with certain parts of the supporting and feeling mechanism omitted; Fig. 5 is a detail view taken along the line 5-5 of Fig. 3 and looking in the direction of the arrow; Fig. 6 is a detail view of the cam for operating the feeler arm; Fig. 7 is a detail elevation of the gripping devices showing the parts during the feeding of a bobbin; Figs. 8 and 9 are detail sectional views of the hopper taken along the line 8-9 in Fig. 2 and showing the feeding lever in two positions; and Figs. 10 and 11 are detail views illustrating the operation of the feeling mechanism.

Referring to Fig. 1 my improved bobbin stripper comprises a hopper 10 located above a pair of cooperating rotating gripping devices ll and 12 (Fig. 4) and means, to be hereinafter described, for intermittently feeding bobbins from the hopper to the grip ping devices.

The gripping device 11 is mounted upon a horizontal shaft 18 (Figs. 1 and 3) supported in fixed bearings 14: and 15 upon the frame 13 of the machine and having a spurgear 16 and an intermittent gear 17 (Fig. 5) mounted upon the rear end thereof. The intermittent gear is periodically advanced one space by a one-toothed pinion 18 secured to a short shaft 19 (Fig. 3) supported in a bearing 20 on the frame B. At its opposite end the shaft 19 carries a bevel pinion 21 meshing with a corresponding bevel pinion 22 mounted upon a transverse shaft 23 (Fig. l) rotatably supported in the frame of the machine.

The shaft 23 carries a sprocket 24 (Figs. 1 and 3) driven by a link belt 25 which passes over a similar sprocket 26 mounted upon a transverse shaft 27. The shaft 27 rotates in fixed bearings in the frame B and carries a spur-gear 28 meshing with a pinion 29 which is connected by a sleeve 30 to a pulley 31 rotatable upon the stud shaft 32. A. loose pulley 33 is also mounted upon the shaft 32 being held thereon by a collar 34.

A shipper rod 35 (Fig. 4:) is mounted to slide transversely at the rear of the machine and is provided with the usual shipper fingers 36. A spring 37 normally keeps the belt upon the loose pulley 33 and a latch 38 vice 12 toward the gripping is utilized to retain the belt upon the driving pulley 31. This latch may be raised manually to release the shipper and stop the machine and mechanism to be hereinafter described is provided for automatically releasing the shipper under certain conditions.

Referring to Figs. 3 and 5, it will be seen that the spur-gear 16 upon the rear end of the shaft 13 meshes with a similar spur-gear 40 mounted upon the rear end of a shaft 41 i which in normal position is substantially parallel to the shaft 13. At its rear end the shaft 41 is supported in bearings in a bracket 42 which is pivoted at 43 to the frame B. Atits forward end the shaft 41 rotates in a bearing in the lower end of a lever 44 (Figs. 4 and? pivoted to the frame B at 45.

The gripping device 12 is secured to the shaft 41- in position to cooperate with the gripping device 11 upon the shaft 13. The lever 44 extends upwardly beyond the pivot 45 and at its upper end carries a stud 46 (Fig. 2) by which it is connected to a sliding rod 47 (Fig. 4). A coil spring 48 encircles the rod 47 and forces the gripping dedevice 11.

The hopper 10 comprises an inclined plate 50 communicating at its lower end with a As shown in. Figs. 8 and 9,

substantially vertical portion from which the bobbins are fed to the gripping devices.

the vertical portion is enlarged at its left hand end, as viewed in Fig. 1, to provide a portion 51 loosely fitting the butts of the bobbins, while the right hand end of the hopper, as viewed in Fig. 1, is-contracted as shown at 52 for guiding the tips of the bobbins. The hopper is made adaptable to bobbins of difierent lengths by the provision of a sliding plate 53 (Fig. 1) adjustably secured by bolts 54 passing through slots in the plate 50.

A feeding lever 55 (Figs. 2, 4 and 8) projects into the vertical portion, 51 of the hopper, the outer end of the lever constituting a cam follower 56. A cam 57 is mounted upon the shaft 27 and rotates in unison with the gear 28. With each revolution, of the cam, the cam follower is actuated to move the feeding lever from the position shown in Fig. 8 to that shown in Fig. 9, thus advancing a single bobbin into position to be seized by the intermittently rotated gripping devices 11 and 12. During the feeding operation the rearwardly extended head 58 of the feeding lever 55 prevents the advance of more than a single bobbin to the gripping devices. A holding finger 59 is pivotally mounted upon the hopper and is held yieldingly beneath the tip of the lower bobbin by a spring 59 By means of the mechanism thus far dethe bobbins are intermittently fed scribed from the hopper to the gripping devices 11 and 12 and through the operation of the intermittent gear 17 and pinion 18 they are held for a certain length of time between the gripping devices. The link chain 25 is provided with a plurality of projections 60 Fig. 1) spaced apart upon the chain by distances somewhat greater than the length of the longest bobbin which can be accommodated in the hopper.

The chain 25 is continuously driven by the sprocket 26 and the parts are so time that the bobbins are fed between the gripping devices slightly in advance of one of the projections 60. As the projection moves forward in a line substantially parallel with the axis of the bobbin and toward the gripping devices it forces the bobbin longitudinally through the devices as shown in Fig. 3, thereby stripping the yarn from the cylindrical portion of the bobbin. This yarn is often tightly wound upon the bobbin and if for any reason the surface of the bobbin is more or less adhesive a considerable pressure is necessary to detach the yarn. On the other hand, it is desirable that the gripping devices should exert only a moderate pressure as they revolve to bring the bobbins to operative position.

In order to provide a moderate pressure during feeding and a sufiicient resistance to separation of the gripping devices during the stripping operation I provide the latch mechanism shown in Figs. 4 and 7. This mechanism comprises a latch 61 pivoted to the hopper at 62 and having a shoulder 63 at its outer end positioned to engage a stud 6-1 in the upper end of the lever 44. The latch 61 is connected by an adjustable link with a bell crank 66 (Fig. 2) pivotally supported at 67 and having an upwardly extending arm 68 with a stud or roll 69 at its upper end in position to be acted upon by the cam 57 previously mentioned.

The parts are so proportioned that the cam 57 will operate to raise the latch 61 during the feeding operation thus permitting the lever 44 to compress the spring 48 and allowing the gripping devices 11 and 12 to be yieldingly separated. As the feed.- ing operation is completed the latch 61 is lowered to the position shown in Fig. 4 to positively resist any separation of the gripping devices 11. and 12. By this arrangement the bobbins are fed yieldingly and without injury while the gripping devices are firmly supported during the stripping operation.

It sometimes happens that a bobbin is not properly advanced to the gripping devices but is left with its tip portion in position to be engaged by the moving projections 60,

while its butt still remains in the hopper. To prevent accident under these conditions, i provide the hopper with a yielding end 70 (Figs. 1 and 4) pivoted upon a stud 71 secured to the hopper and normally held in closed position by a spring 72. With this arrangement a bobbin having its butt retained within the hopper may be ejected without injury. It is desirable, however, when this occurs, that the machine should be immediately stopped and accordingly I connect the yielding end by an adjustable link 73 (Fig. l) with a bell crank lever T iwhich in turn is connected by a link 75 (Fig. 4) to the latch 38. Through these connections the latch 38 will be raised simultaneously with the movement of the vielding end 70 and the shipper 35 will thus be released to stop the machine.

As the bobbins are forced longitudinally past the gripping devices the butts are supported upon a pair of guides and 81 (Fig. 3) and when the tip of the bobbin is clear of the gripping devices the bobbin swings down to the suspended position shown in Fig. 1. The sleeve 82 assists in the proper placing of the bobbins upon the supports. Each bobbin thus advanced pushes along the bobbins previously suspended, the bobbins being moved intermittently through distances equal to the diameter of the butt of a bobbin.

As each bobbin comes into the position of the bobbin indicated at C in Fig. l the feeling mechanism comes into operation for detecting and separating from the stripped bobbins any bobbin having yarn remaining thereon. To permit the operation of this mechanism the guide 81 is provided with a portion 83, (Fig. 3) which is pivoted upon a stud 84 and yieldingly retained in position by a spring 85. The portion 83 will normally support the bobbins as they are moved along the guides but will yield under certain circumstances to permit a bobbin to be moved downwardly from between the guides.

A feeler arm 86 (Fig. 1) is pivoted at its rear end upon a stud 87 formed on a sleeve 88 which in turn is pivoted to the frame B at 89. At its forward end the arm 86 is provided with a detecting device which in the present construction comprises a small piece of card clothing 90 secured to the end of the arm. In its intermediate portion the arm 86 is provided with a pair of pins 91-91 (Figs. 1 and 3) which embrace an irregular side andedge cam 92 mounted upon the shaft 27 formation shown in Figs. 1 and 6.

A spring (Figs. 1 and 3) is connected at its upper end to a bracket secured to the frame B and at its lower end to the arm 86, and holds the arm in contact with the cam The formation of the cam is such that the detecting member 90 is given a substan tially rectilinear motion, as indicated in broken lines in Figs. 10 and 11. The member 90 is thus moved inwardly against the and having the peculiarv bobbin when the feeler arm is in its upper position and is held in contact with the bobbin while the arm is moved downwardly. If the bobbin has been properly stripped the card clothing will move freely along the bobbin but if any yarn remains upon the bobbin the points of the card clothing will catch in the yarn and will drag the bobbin downwardly as indicated in Fig. 11, the yielding portion 83 of the guide 81 permitting this downward removal of the bobbin.

Guides 94, 95 and 96 (Figs. 10 and 11) prevent the bobbin from moving out of the range of the feeler during its downward stroke. The properly stripped bobbins will continue their movement along the guides 80 and 81 until they pass into any suitable receptacle while the bobbins upon which any yarn remains will be removed from the guides by the feeler arm 86 and may be re ceived in a separate receptacl The operation of the several features of my invention has been fully described. in connection with the specific description thereof and it is thought that further description of the method of operation will be unnecessary.

Having thus described my invention it will be evident that many changes and modificationscan be made therein without departing from the spirit and scope of the invention as set forth in the claims and I do not Wish to be limited to the details herein disclosed, but

lVhat I do claim is l. A bobbin stripper having, in combina tion, a hopper, a pair of cooperating rotating gripping devices, additional mechanical means for engaging a bobbin within the the feeding operation and forcing the bobbin downwardly out of said hopper to said gripping devices, and means to thereafter force the bobbins longitudinally through the gripping devices.

A bobbin stripper, having in combination a hopper, gripping devices, means for feeding a bobbin from said hopper to said gripping devices, and bobbin actuating means moving continuously in a closed path and having a plurality of projecting portions effective to engage successive bobbins and force them longitudinally through the gripping devices.

3. A bobbin stripper, having in combination a pair of gripping devices, means to feed a bobbin to said gripping devices, a flexible member moving continuously in one direction, said member at all times having a portion thereof movable along a line parallcl to the axis of the bobbin held by said gripping devices and having lugs thereon positioned to contact with the tip of said bobbin and effective to force the bobbin longitudinally through the gripping devices.

4:. A bobbin stripper, having in combination a hopper, a pair of intermittently rotatoperative end of said arm a substantially ing gripping devices, a feed lever cooperatrectilinear movement. ing with said gripping devices to feed a bob- 12. A bobbin stripper, having in combinabin from said hopper to said devices, a link tion, a pair of normally yielding separable 5 chain having a path of travel parallel to the gripping devices for holding the bobbin,

aXis of a bobbin held by said gripping demeans to move the bobbin longitudinally vices, and lugs on said chain for moving relative to said gripping devices, and means said bobbin longitudinally through said to lock said gripping devices to prevent gripping devices. separation thereof during the longitudinal 1O 5. A bobbin stripper, having in combinamovement of said bobbin.

tion, means to strip yarn from a bobbin, a 13. A bobbin stripper, having in combinasupport for the stripped bobbins, and means tion a gripping device rotatable in fixed to separate and remove from said support bearings, a second gripping device rotatable a bobbin having yarn remaining thereon. in a movable bearing, means to yieldingly 15 6. A bobbin stripper, having in combinaresist movement of said last mentioned beartion means to strip waste yarn from a bobing and gripping device, and additional bin, a support for the stripped bobbins, and means to positively resist said movement a feeler to detect and remove from said supduring the stripping operation. port any bobbin having yarn remaining 14. A bobbin stripper, having in combina- 20 thereon. tion, a gripping device rotatable in fixed 7. A bobbin stripper, having in eombinabearings, a seeon'l gripping device rotatable tion, means to strip yarn from a bobbin, in a movable bearing, means to yieldingly means to deliver the stripped bobbins at one resist movement of said second gripping deoutlet of the machine, and means to sepavice and bearing, a locking device to posi- 25 rate and deliver at a different outlet any tively resist such movement during the stripbobbin having yarn remaining thereon. ping operation, a cam, a cam follower, and 8. A bobbin stripper, having in combinaconnections from said iollower to the position, means to strip waste yarn from a bobtively locking device whereby the cam is bin, a support for the stripped bobbin, a effective to move the locking device alter- 30 iteeler arm, means to move said arm toward nately to operative and inoperative posisaid bobbin on said support, and means to tions. thereafter move the feeler arm longitudi- 15. A bobbin stripper, having in combinanally of sald bobbin. tion a hopper, gripping devices, means for 9. A bobbin stripper, having in combinamoving a bobbin from the hopper to said 35 tion, means to strip yarn from a bobbin, gripping devices, means to therea'lter move parallel guides for supporting the stripped the bobbin longitudinally beneath said hopbobbins by their butts only, one of said per, a power shaft for operating said parts, guides having a downwardly yielding secand a shipper for controlling the application, and means to draw any bobbin having tion of power to said shaft, said hopper hav- 1 yarn remaining thereon downwardly past ing an end which is yieldingly movable to i said yielding section. permit the longitudinal exit of a bobbin im- 10. A bobbin stripper, having in combinaproperly positioned in the gripping devices, tion, means to strip yarn from a bobbin, a and said end being connected to release said support for the stripped bobbins, a feeler shipper when moved from normal position.

45 arm having a plurality of points thereon, 16. A bobbin stripper having in combinameans for moving said points into contact tion a hopper, gripping devices, means for with each of said bobbins successively, and feeding a bobbin from the hopper to said means for moving said arm and points longigripping devices, and means to thereafter tudinally of said bobbins, said arm thereby strip the yarn from the bobbin, said hopper 50 separating any bobbin having yarn remainhaving a plate adjustable in dilierent posiing thereon from the stripped bobbins. tions to adapt said hopper to use with bob- 11. A bobbm stripper, having in combinabins of diiiierent lengths.

tion, means to strip yarn from a bobbin, In testnnony whereof I have hereunto means to yieldingly support the stripped set my hand, in the presence of two subscrib- 55 bobbin, and means to remove from said suping witnesses.

' port any bobbin having yarn remaining EPPA l-l. RYON.

thereon, said last named means comprising Witnesses: a feeler arm having a piece of card clothing Crmnnns F. Hn'rcnnv s, secured thereto, and a cam for giving the J. B. SYME.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent Washington, D. C. 

